CVE-2026-82821

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.58% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 47.4% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Not recorded

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-31 18:45Z1 MO AGO

Last updated

2026-08-31 19:00Z1 MO AGO

Reserved

2026-08-31

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-404Improper Resource Shutdown or ReleaseClass
• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

ceef042829f307938f446d4015ec8a264e9f464ea966e69cbfa7300ff6d2c409

• vuldb.comVDB-397244 | FLVMeta AMF Object Parsing amf.c amf_object_get null pointer dereferencehttps://vuldb.com/vuln/397244vdb-entrytechnical-description
• vuldb.comVDB-397244 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/397244/ctisignaturepermissions-required
• vuldb.comCVE-2026-82821 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-82821third-party-advisory
• vuldb.comSubmit #876597 | flvmeta 1.2.2 SEGVhttps://vuldb.com/submit/876597third-party-advisory
• github.comhttps://github.com/noirotm/flvmeta/issues/28issue-tracking
• github.comhttps://github.com/raind20001020/Poc/blob/main/flvmeta_SEGVexploit
• github.comhttps://github.com/noirotm/flvmeta/commit/52642f7dfb76ec7334016622dde60b1ae963d79bpatch